Garmin Fenix 3 Review – this changed it all

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Product – Garmin Fenix 3 Review      

RRP – £429.00

Cheapest Price – From £289.00

Cheapest Retailer –

My Rating – 9.5 / 10


Product Overview

The Garmin fenix 3 is a GPS sport watch designed for demanding athletes and outdoor adventurers. It is powered by GPS and Glonass via the new steel EXO antenna and a brilliant colour display. Fenix 3 comes packed with multi-sport training, trail running and navigation. It introduces a tough athletic design with quality materials and smart features.

The Fenix 3 is designed to assist people during their sport activities and outdoor life. It supports performance sports like running, cycling, swimming, trail running, indoor training, cross country skiing as well as triathlon and recreational activities such as hiking, climbing and downhill skiing. It measures performance on the go, tracks activities for sharing and navigates the user back home at the end of an adventure.

Garmin fenix 3 features an ultra-strong glass-fibre housing and stainless steel buttons for extra durability. A sunlight-readable high-resolution colour chroma display with LED backlight lets you access your data in any light condition. fenix 3 is water rated to 100 metres and has a battery life of up to 50 hours in UltraTrac mode, 16 hours in GPS mode and up to 3 months in watch mode (all depending on settings).


  • Product Dimensions: 1.5 x 5.1 x 5.1 cm ; 82 g
  • Boxed-product Weight: 340 g
  • Batteries 1 Lithium ion batteries required. (included)
  • Stainless Steel EXO antenna with GPS + GLONASS support for fast fix and accuracy
  • 3.1 cm (1.2-inch) sunlight readable colour Chroma display
  • Altimeter, barometer and 3-axis compass with auto calibration
  • Smart features like smart notification and connect IQ app support
  • Advanced fitness training features including VO2 Max, running dynamics and recovery advisor

How has it helped me?

When I started running last year I was using my phone to track my runs etc. All great but I wasn’t getting a lot of info from it. Then a friend suggested getting a GPS watch. I thought it was probably a waste of time, why do I need a watch?

So I checked out reviews and shopped around and eventually came up with the Fenix 3. Since the day I bought it I have never been disappointed. Initially I just used it to track my runs with my pace and distance etc. and that was great until I really wanted to start training properly.

So more recently I have looked more at my cadence (steps per minute) to optimise the best running. I have also started to use the heart rate monitor far more – the reason for this is that with the longer Ultra marathon distance I’m not looking at pace, I’m concentrating on keeping my heart rate at a level I can keep going without tiring myself out too much. I ran at pace before and I blew out after 16 miles or so. With heart rate I’m more controlled and it’s a great way to gauge yourself.

It’s also the watch I use everyday. It’s quite big but I like that, plus you can download watch faces for it.

The other neat thing is the Garmin Connect App. The watch syncs everything to it so you can look back at a ton of data – very useful for looking at where you can and where you have improved.

All in all one of the best items I have ever bought. I just couldn’t be without it.

Other Watches I reviewed when I was looking:


  1. Hi,
    Quite interesting review on Garmin Fenix 3 Review,
    I just started to do some walk everyday and I think this sport watch can help me to keep track on my daily walks and other information Im interested to keep track.
    Even I’m not a demanding athlete and outdoor adventurer, as a person who know that doing exercise every day is good to become healthier it will help out, and you never know, I might start getting healthier and stronger and then my walks will be longer!

    1. Thanks for your feedback Alejandra. If you were thinking of a watch and you are just starting out with walking etc. I would go for a Fitbit. They are much cheaper and would suit someone just starting out and looking at the amount of steps they might achieve in a day.

      Many thanks,


  2. I have really been interested in buying a GPS watch. I do a lot of hiking and mountain biking. Several of my friends own these and just rave about them. I really like the battery life on the Fenix 3, 50 hours seems like a long time. 16 hours of GPS battery is more than enough I would think. I have been thinking of training for sprint triathlon and I think a GPS watch would be great for training. They thought of everything with the sunlight readable display and many other features. I like the fact that you can download different watch faces. Thanks for the review, I will definitely keep this in mind as I continue to research.

    1. Hi Matthew, yes these are different to the Fitbit. The Fitbit is a great starter watch for mainly tracking your steps etc. I used one a year or so ago and for me the best thing it did was to motivate me to do more – especially if someone else has one because it can add a competitive edge.
      The Garmin is on a different level, but I would only suggest you buy it if you are serious about your running and fitness. One due to the cost difference, the other due to the fact you may not want all the data it will provide if it doesn’t matter to you.
      For me the Garmin is what I love because of what it can give me. The fitbit is a great starter watch.

      Hope this helps,


  3. It’s funny I hit on this post. My hubby’s in the middle of doing he’s research regarding sport watches reviews. He’s a funny person when it comes to decision of any sort of purchase – when we talk about watches, he’s really crazy about this. He can’t just buy something. It demands a few days/weeks (I mean it!) of searching through the deepest parts of the Internet to make a certain decision. I’ll definitely show him this article. I hope it’ll save some of his time 😉

    1. Hi Gosia,
      your husband sounds the same as me. I spent hours watching YouTube videos on reviews for different watches. It’s a lot of money to pay out I guess and it needs to be the right watch. So happy I chose this one, the best choice for me.

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